EP0795412B1 - Motor mit einer von mehreren Schneckengetrieben versehenen Antriebswelle für einen Drucker - Google Patents

Motor mit einer von mehreren Schneckengetrieben versehenen Antriebswelle für einen Drucker Download PDF

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Publication number
EP0795412B1
EP0795412B1 EP97104181A EP97104181A EP0795412B1 EP 0795412 B1 EP0795412 B1 EP 0795412B1 EP 97104181 A EP97104181 A EP 97104181A EP 97104181 A EP97104181 A EP 97104181A EP 0795412 B1 EP0795412 B1 EP 0795412B1
Authority
EP
European Patent Office
Prior art keywords
shaft
gear
driving
paper feed
speed reduction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97104181A
Other languages
English (en)
French (fr)
Other versions
EP0795412A1 (de
Inventor
Hiroshi Narita
Noboru Otsuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0795412A1 publication Critical patent/EP0795412A1/de
Application granted granted Critical
Publication of EP0795412B1 publication Critical patent/EP0795412B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J23/00—Power drives for actions or mechanisms
    • B41J23/02—Mechanical power drives
    • B41J23/025—Mechanical power drives using a single or common power source for two or more functions

Definitions

  • the invention relates to a printer of an electronic case register or the like which is used in, for example, a POS (Point-Of-Sale) system.
  • POS Point-Of-Sale
  • the rotation driving force of a motor 61 is transmitted from a gear 64 having a worm and a bevel gear to a driving pulley gear 65 for driving a belt which reciprocally moves a printing head, and also to a driving gear 66 for a ribbon driving mechanism, through a first reduction gear 62 and a transmission gear 63.
  • the rotation driving force of the motor 61 is transmitted also to a paper feed gear 73 for driving a paper feeding mechanism, through the first reduction gear 62, a second reduction gear 71, and a third reduction gear 72.
  • the rotation driving force of a motor is subjected to a speed reduction process by using a power transmission mechanism configured by a combination of spur gears, in order to drive a printing mechanism and a paper feeding mechanism which require a large torque.
  • printers are requested to be reduced in size.
  • a motor itself is miniaturized, and the torque required by paper feeding and printing mechanisms is ensured by increasing the reduction ratio of gears.
  • the invention has been conducted in view of the problem. It is an object of the invention to provide a printer having a power transmission mechanism which requires a small space and can realize a large speed reduction.
  • the present invention provides a printer as specified in claim 1.
  • Preferred embodiments of this printer are defined in claims 2 to 5.
  • the invention provides a printer which comprises carriage driving means for moving a carriage on which printing means is mounted in a direction of a line of printing, and paper feeding means for recording paper, a driving shaft which is rotated by a motor; wherein the drive shaft has at least two worms selected from a first worm which transmits a rotation force of the driving shaft to the paper feeding means, a second worm which transmits the rotation force of the driving shaft to the carriage driving means and a third worm which transmits the rotation force of the driving shaft to ink ribbon driving means for moving an ink ribbon which is to be transferred to the recording paper.
  • a printer wherein lead angles of at least two of the first, second and third worms are equal in direction to each other.
  • a printer wherein the motor has a forth worm on a motor shaft, and a worm gear which meshes with the forth worm is fixed to the driving shaft.
  • a printer wherein the driving shaft is rotatably supported in the vicinity of at least one of the first, second and third worms.
  • a printer wherein the driving shaft is divided into two or more portions, at least one of the first, second and third worms being disposed on one of the portions which is on an end side.
  • the plural worms are disposed on the single driving shaft, it is possible to attain a large reduction ratio, and power transmission to mechanisms of the printer can be configured without requiring a large space. Furthermore, the number of components is very small. Consequently, portions where the gears mesh with each other can be reduced in number and generation of noises caused by backlash of the gears can be reduced to a very low level.
  • the worms apply reaction forces to the driving shaft in the same direction, and hence the driving shaft does not fluctuate in the axial direction, so as to be stabilized.
  • the carriage is stably transported, so that the printing qualify is enhanced, and the vibration due to the plays of the gears is reduced. Therefore, generation of noises caused by backlash of the gears can be further suppressed.
  • Fig. 1 is a perspective view illustrating the mechanism of the whole of a printer, with removing away external parts (such as a frame 7, and a cover) from the printer
  • Fig. 2 is a view illustrating a printing mechanism section.
  • the printer of the embodiment is mainly configured by four mechanism sections, i.e., a power transmission mechanism section, the printing mechanism section, a paper feeding mechanism section, and a ribbon feeding mechanism section.
  • a motor 1 having a motor gear 2 in the form of a worm is mounted in a lateral direction with respect to the printer.
  • the power transmission mechanism section is configured by a speed reduction shaft 3 serving as the driving shaft onto which a reduction gear 4, a pulley driving gear 24, and a paper feed clutch unit 6 are fixed, and which is disposed on the right end side of the frame 7.
  • a worn wheel portion 4-1 which meshes with the motor gear, and a worm portion 4-2 are united with each other.
  • the worm portion 4-2 of the reduction gear 4 meshes with a worm wheel portion formed in the lower portion of a ribbon take-up shaft set 5 which drives a ribbon driving mechanism.
  • the pulley driving gear 24 constitutes a worm gear and meshes with a worm gear 22-1 of a pulley transmission gear 22 which is rotatably disposed on the bottom of the frame 7.
  • the printing mechanism section comprises a carriage 16 on which a printing head 15 is mounted, and which is moved by a carriage belt 19.
  • the carriage belt 19 runs between a driven pulley 21-1 and a driving pulley 20-1 which are respectively disposed on the sides of the frame 7.
  • the bidirectional printing method is employed in which printing is enabled during the movement of the printing head 15 in both the directions of the arrows a and b.
  • Fig. 3 is a perspective view of the paper feeding mechanism section. The section will be described with reference to the figure.
  • the paper feeding mechanism section comprises a paper guide frame 44 disposed in the rear portion of the printer, a paper guide (inner) 43 disposed so as to oppose the guide frame 44 with being separated therefrom by a predetermined gap, and a paper feed shaft 33.
  • the paper feed shaft 33 has sprocket wheels 35 at the lateral ends, and is rotated through the paper feed clutch unit 6. Pins which are to engage with holes formed in the side edges of recording paper are formed on the outer peripheries of the sprocket wheels 35.
  • the paper feeding mechanism section further comprises a paper feed trigger electromagnet unit which controls the on/off operation for the power transmission of the clutch unit 6, and a release mechanism which is disposed on the paper feed shaft 33 and serves as a second clutch.
  • the paper feed clutch unit 6 will be described in detail with reference to Figs. 4, 5, 7, and 8.
  • Fig. 4 is a side view of a portion supporting the speed reduction shaft in a first embodiment of the invention
  • Fig. 5 is a partially cutaway perspective view of the paper feed clutch unit
  • Fig. 7 shows a perspective view and a section view of an example of fixation of the gears onto the speed reduction shaft
  • Fig. 8 is a rear view of the paper feed trigger electromagnet.
  • the paper feed clutch unit 6 of the embodiment is a spring clutch, and comprises: a paper feed arbor 25 fixed to the speed reduction shaft 3; a paper feed clutch spring 27 which is wound on a paper feed sleeve 26 and has arms respectively formed at the ends, the paper feed sleeve being pressingly inserted into the paper feed arbor 25 so as to be rotated integrally therewith; a paper feed ratchet wheel 28 which is rotatably supported on the paper feed arbor 25, has teeth 28-1 arranged on the outer periphery and engaging with a trigger suction plate 38, and engages with one of the arms of the clutch spring 27; and a paper feed driving gear 29 which is rotatably supported on the paper feed arbor 25, has a worm gear 29-1 formed on the outer periphery and transmitting the power to the paper feed mechanism section, and engages with the other arm of one clutch spring 27.
  • the paper feed clutch unit 6 is assembled as a unit before the unit is fixed to the speed reduction shaft 3.
  • the pawl 25-1 is not deflected toward the center, and hence the components are prevented from being disassembled.
  • Fig. 9 is a rear view of the release mechanism
  • Fig. 10 is an enlarged section view of the release mechanism.
  • the release mechanism comprises: a paper feed transmission gear 30 which is disposed on the paper feed shaft 33 and rotated by the paper feed driving gear 29; a paper feed clutch disc 32 which is not rotated with respect to the paper feed shaft 33 and can be moved so as to mesh with the transmission gear 30; and a release lever 40 which locates the clutch disc 32 to either of the position where the disc and the transmission gear 30 mesh with each other, and that where the disc and the transmission gear 30 do not mesh with each other.
  • the ribbon feeding mechanism section is configured by a ribbon cassette (not shown) in which a Mobius system is configured by an endless ribbon, and the ribbon take-up shaft set 5 which engages with a ribbon driving portion of the ribbon cassette so as to move the ribbon.
  • the ribbon take-up shaft set 5 for the ribbon meshes with the worm portion 4-2 of the reduction gear 4 so as to be rotated.
  • three worm 24, 4-2 and 29-1 are attached to drive shaft 3 in this embodiment.
  • this invention shall not limited to this embodiment, and may be effective even when the drive shaft has two worm selected from these three worms.
  • the pulley driving gear 24 fixed to the speed reduction shaft 3 rotates the driving pulley 20-1 through the pulley transmission gear 22. Teeth which mesh with the carriage belt 19 serving as a timing belt are formed on the driving pulley 20-1.
  • the carriage belt 19 which runs between the driving pulley and the driven pulley 21-1 is moved in the direction of the arrow c.
  • the carriage 16 on which the printing head 15 is mounted is engaged with a carriage driving shaft 19-1 fixed to the carriage belt 19, so as to be moved in the direction of the arrow a or b.
  • printing is conducted at a desired position by using a timing signal detected by a T-detection plate 10 fixed to the shaft of the motor 1, and a position detection signal detected when an R-detector set 11 of the light transmission type fixed to the carriage 16 recognizes a projection 7-2 on the frame 7.
  • the trigger suction plate 38 is caused to again engage with the paper feed ratchet wheel 28 by the force of a trigger pawl spring 39, and stops in this state. Therefore, the rotations of the paper feed ratchet wheel 28 and the paper feed driving gear 29 are stopped in the standby state by the function of the paper feed clutch spring 27.
  • the paper feed transmission gear 30 rotates.
  • the rotation is transmitted to the paper feed shaft 33 and the recording paper is fed by the sprocket wheels 35.
  • the recording paper in order to conduct an operation such as replacement of the recording paper engaged with the sprocket wheels 35, the recording paper is detached from the sprocket wheels 35.
  • a cam face 40-1 of the release lever 40 pushes the engaging face m of the paper feed clutch disc 32 in the direction of the arrow n, and hence the engagement between the teeth 30-1 of the transmission gear 30 and the teeth 32-1 of the clutch disc 32 is canceled, thereby allowing the paper feed shaft 33 to freely rotate.
  • the recording paper can be pulled out in either direction (the state indicated by the broken lines in Fig. 10).
  • a release lever spring 41 causes the paper feed transmission gear 30 and the paper feed clutch disc 32 to mesh with each other, so that the paper feed shaft 33 and the transmission gear 30 can integrally rotate.
  • the gears are attached to the speed reduction shaft 3 so as to always act in the direction of the arrow d or toward the rear portion of the printer.
  • the motor 1 rotates in a counterclockwise direction so as to rotate the reduction gear 4, and hence the speed reduction shaft 3 is urged toward the rear portion of the printer by the rotation of the motor 1.
  • the worm portion 4-2 of the reduction gear 4 is configured so that, when a worm wheel section formed in the lower portion of the ribbon take-up shaft set 5 for driving the ribbon driving mechanism is rotated, the speed reduction shaft 3 is urged in the direction of the arrow d by the reaction force due to the rotation.
  • the printing mechanism is driven by the pulley driving gear 24 through the pulley transmission gear 22.
  • the pulley driving gear 24 which is a worm gear is configured so as to, also in this case, urge the speed reduction shaft 3 in the direction of the arrow d.
  • the worm is configured so that the speed reduction shaft 3 is urged in the direction of the arrow d or toward the rear portion of the printer.
  • all the worms disposed on the speed reduction shaft 3 are configured so that their lead angles are oriented in the same direction.
  • the motor gear and the reduction gear urge the speed reduction shaft 3 in the direction of the arrow d
  • the helical direction of the worm gear in the mesh of the pulley driving gear 24 and the pulley transmission gear 22 is set to be opposite (the lend angle is set to be opposite)
  • the speed reduction shaft 3 is then moved in the direction opposite to the direction of the arrow d or toward the front portion of the printer. Then, the speed reduction shaft 3 is moved in the direction opposite to the direction of the arrow d because of the load for moving the printing head 15.
  • the speed reduction shaft 3 is reciprocally moved in the axial direction, and the position of the printing head 15 fails to coincide with the timing signal detected from the motor 1, with the result that the printing quality is largely lowered.
  • the reciprocal movement of the speed reduction shaft 3 adversely affects the generation of noises, etc.
  • the configuration in which rotation of worms or worm gears disposed on the speed reduction shaft 3 always urges the speed reduction shaft 3 in one direction can solve the problem, and therefore can attain a great advantage.
  • the components constituting the power transmission mechanism in the invention are the motor gear 2, the reduction gear 4, the speed reduction shaft 3, the pulley driving gear 24, the paper feed clutch unit 6 (the paper feed driving gear 29), the ribbon take-up shaft set 5, the pulley transmission gear 22, the carriage driving pulley set 20, and the paper feed transmission gear 30, or the number of the components can be reduced to eight.
  • the portions where gears mesh with each other are reduced to a very small number or five.
  • the helical directions of the worms are set so that the reaction forces of the worms are caused to urge the speed reduction shaft 3 toward the rear portion of the printer (in the direction of the arrow d) by the load exerted in each of the ribbon drive, the print head drive, and the paper feed. Therefore, the plays of the gears are small, and generation of noises caused by backlash of the gears can be suppressed to a very low level.
  • Fig. 6 is a view showing parts in example 1 of fixation of the gears onto the speed reduction shaft
  • Figs. 7(a) and 7(b) show a perspective view and a section view of example 2 of fixation of the gears onto the speed reduction shaft.
  • the speed reduction shaft 3 is a deformed shaft having a section shape in which recesses 3-1 elongating in the whole length of the shaft are formed at two symmetrical positions.
  • projections 4-3 which are to engage with the recesses 3-1 are formed.
  • the reduction gear 4 is attached to the speed reduction shaft 3 with engaging the projections 4-3 with the recesses 3-1 so that the gear cannot be rotated with respect to the shaft and can be moved in the axial direction.
  • the movement in the axial direction is restricted by an E-type snap ring 3-2. Since the recesses are formed over the whole length of the shaft, the configuration has drawbacks such as that the strength is low and a warpage easily occurs.
  • a configuration is employed in which, as shown in Figs. 7(a) and 7(b), a tenon is formed on each end of the speed reduction shaft 3, fitting grooves 4-1 and 25-2 for receiving the respective tenons are respectively formed inside the reduction gear 4 and the paper feed arbor 25, and these components are then engaged with each other so as to integrally rotate.
  • the speed reduction shaft 3 is enhanced in rigidity so as to have a higher strength.
  • the relationships between the tenons and the fitting grooves may be inverted, or the fitting grooves may be formed on the speed reduction shaft 3 and the tenons in the reduction gear 4.
  • a method may be employed in which key ways are formed in each of the speed reduction shaft 3 and a component which is to be attached to the shaft, and a key 4-2 to be fitted into the key ways are used.
  • Fig. 11 is a side view of a portion supporting the speed reduction shaft in another embodiment
  • Fig. 12 is a side view of a portion supporting the speed reduction shaft in a further embodiment.
  • the reduction gear 4, the pulley driving gear 24, and the paper feed clutch unit 6 are fixed to the single speed reduction shaft 3, and the shaft is supported at the ends or two points (Fig. 4).
  • the pulley driving gear 24 disposed in the middle portion of the speed reduction shaft 3 produces a large run out (in the directions of the arrows in Fig. 4). This phenomenon increases the rotation variation of the wheel train engaged with the pulley driving gear 24.
  • a speed reduction shaft 45 or 45-1 in Fig 11 or 12 has a limited length which elongates to a position beyond a pulley driving gear 46 or 46-1, and is rotatably supported by a raised portion formed on the bottom of a frame 47 or 47-1 with using a part of the pulley driving gear 46 or 46-1 as a bearing.
  • the pulley driving gear 46 or 46-1 produces a small run out and the rotation variation is reduced, thereby producing an effect that the accuracy of the power transmission is further enhanced. Since the engaging degree of the worm is ensured, moreover, also the durability of the gear is improved.
  • the embodiments of Figs. 11 and 12 are different from each other in the configuration of the speed reduction shaft.
  • the speed reduction shaft of the embodiment of Fig. 11 is configured in the same manner as that of the first embodiment.
  • the embodiment of Fig. 12 is different from the embodiments in that the speed reduction shaft is divided into two portions and the pulley driving gear 46-1 is used a joint.
  • the load applied to the paper feed clutch unit can be supported by the metal shaft of high rigidity and the vicinity of the bearing. Therefore, the embodiment is more advantageous in strength than the embodiment of Fig. 11.
  • Fig. 13 shows a still further embodiment or the invention.
  • Fig. 13 is a perspective view of the whole of a printer.
  • the printer is different from the second embodiment in that a speed reduction shaft 48 and a driving pulley 49 are rotated at a substantially same rate and a pulley driving gear 50 and the driving pulley 49 are directly coupled to each other by a timing belt 51.
  • the use of the timing, belt 51 can eliminate the rotation variation of the carriage driving pulley set 20 due to the part accuracies such as the concentricity of the worm wheel and the spur gear of the pulley transmission gear 22 in the first embodiment.
  • a transmission element other than a worn may be used on the speed reduction shaft.
  • the recording paper has a continuous slip form having holes in the side edges and the sprocket wheels are used as the paper feeding means.
  • roll-like recording paper and means for friction feed such as rollers may be used.
  • the invention is not restricted by printing means, a printing method, etc.
  • the plural worms are disposed on the single driving shaft, it is possible to attain a large reduction ratio, and power transmission to mechanisms of the printer can be configured without requiring a large space. Furthermore, the number of components is very small. Consequently, portions where the gears mesh with each other can be reduced in number and generation of noises caused by backlash of the gears can be reduced to a very low level.
  • the worms urge the driving shaft in the same direction, and hence the driving shaft does not fluctuate in the axial direction, so as to be stabilized.
  • the carriage is stably transported, so that the printing quality is enhanced, and the vibrations of the gears due to the plays are reduced. Therefore, generation of noises caused by backlash of the gears can be further suppressed.

Landscapes

  • Handling Of Sheets (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)
  • Common Mechanisms (AREA)
  • Gear Transmission (AREA)

Claims (5)

  1. Drucker mit:
    einem Druckkopf (15);
    einem Schlitten (16), auf welchem der Druckkopf (15) angebracht ist;
    einem Schlittenantriebsmittel (19, 20-1, 21-1) zum Bewegen des Schlittens (16) in eine Richtung einer Druckzeile;
    Papierzuführmitteln (33, 43, 44) für die Zufuhr des Aufzeichnungspapiers;
    ein Tintenband;
    ein Tintenbandantriebsmittel (5) zum Bewegen des auf das Aufzeichnungspapier zu transferierenden Tintenbandes;
    einem Motor (1);
    einer Antriebswelle (3), die durch einen Motor (1) in Drehung versetzt wird;
    wobei die Antriebswelle (3) wenigstens zwei Schnecken (29-1, 24, 4-2) aufweist ausgewählt aus der Gruppe bestehend aus einer ersten Schnecke (29-1), die eine Drehkraft der Antriebswelle (3) auf das Papierzuführmittel (33, 43, 44) überträgt, einer zweiten Schnecke (24), die die Drehkraft der Antriebswelle (3) auf das Schlittenantriebsmittel (19, 20-1, 21-1) überträgt und einer dritten Schnecke (4-2), die die Drehkraft der Antriebswelle (3) auf das Tintenbandantriebsmittel (5) überträgt.
  2. Drucker gemäß Anspruch 1, bei dem Anschnittwinkel von wenigstens zwei Schnecken ausgewählt aus der Gruppe bestehend aus der ersten, zweiten und dritten Schnecke (29-1, 24, 4-2) sich in ihrer Richtung entsprechen.
  3. Drucker gemäß Anspruch 1 oder 2, der des weiteren eine vierte Schnecke (2) auf der Motorwelle umfaßt sowie ein Schneckenrad (4-1) auf der Antriebswelle (3), das in die vierte Schnecke (2) eingreift.
  4. Drucker gemäß Anspruch 1 oder 2, wobei die Antriebswelle (3) drehbar in der Nähe wenigstens einer der Schnecken ausgewählt aus der Gruppe bestehend aus der ersten, zweiten und dritten Schnecke (29-1, 24, 4-2) gelagert ist.
  5. Drucker gemaß einem der Ansprüche 1 bis 4, wobei die Antriebswelle (3) in zwei oder mehr Bereiche aufgeteilt ist, wobei wenigstens eine der Schnecken ausgewählt aus der Gruppe bestehend aus der ersten, zweiten und dritten Schnecke (29-1, 24, 4-2) auf einem der Bereiche angeordnet ist, der sich an einer Endseite befindet.
EP97104181A 1996-03-12 1997-03-12 Motor mit einer von mehreren Schneckengetrieben versehenen Antriebswelle für einen Drucker Expired - Lifetime EP0795412B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP5521296 1996-03-12
JP5521296 1996-03-12
JP55212/96 1996-03-12

Publications (2)

Publication Number Publication Date
EP0795412A1 EP0795412A1 (de) 1997-09-17
EP0795412B1 true EP0795412B1 (de) 1999-12-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104181A Expired - Lifetime EP0795412B1 (de) 1996-03-12 1997-03-12 Motor mit einer von mehreren Schneckengetrieben versehenen Antriebswelle für einen Drucker

Country Status (5)

Country Link
US (1) US5842795A (de)
EP (1) EP0795412B1 (de)
KR (1) KR100394394B1 (de)
CN (1) CN1079331C (de)
DE (1) DE69700969T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993095A (en) * 1998-01-09 1999-11-30 International Business Machines Corporation Mechanical transmission
AU7679600A (en) * 1999-09-20 2001-04-24 Scanvec Garment Systems, Ltd. Synchronized motion printer with continuous paper movement
EP1780029A1 (de) * 2005-10-27 2007-05-02 Océ-Technologies B.V. Drucker mit Vorschubeinrichtung für einen Druckträger
WO2015093008A1 (ja) 2013-12-18 2015-06-25 セイコーエプソン株式会社 液体供給ユニット
US20150183248A1 (en) 2013-12-27 2015-07-02 Seiko Epson Corporation Recording apparatus
CN105172391B (zh) * 2014-06-12 2017-08-25 精工爱普生株式会社 记录装置
JP7131246B2 (ja) * 2018-09-25 2022-09-06 セイコーエプソン株式会社 印刷装置、及びモーター

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1000641B (it) * 1973-12-28 1976-04-10 Olivetti & Co Spa Unita di stampa elettrotermica di tipo perfezionato
DE3014822C2 (de) * 1980-04-15 1985-08-14 Mannesmann AG, 4000 Düsseldorf Antriebsvorrichtung für einen Drucker, insbesondere einen Matrixdrucker
GB2169875B (en) * 1985-01-19 1988-09-14 Francotyp Postalia Gmbh Improvements in ribbon cassettes
JP2519886B2 (ja) * 1985-05-13 1996-07-31 セイコーエプソン株式会社 小型プリンタ
JPS62145262A (ja) * 1985-12-20 1987-06-29 Fuji Xerox Co Ltd プリンタ−装置
JPS63201750U (de) * 1987-06-16 1988-12-26
US4869607A (en) * 1987-07-21 1989-09-26 Storage Technology Corporation Line printer ribbon reverse mechanism
JPH0241282A (ja) * 1988-07-31 1990-02-09 Nec Home Electron Ltd プリンタの印字装置
JPH04358173A (ja) * 1991-06-05 1992-12-11 Tokyo Electric Co Ltd 画像形成装置
JPH06110290A (ja) * 1992-09-24 1994-04-22 Toshiba Corp 画像形成装置
JPH07309050A (ja) * 1994-05-17 1995-11-28 Seiko Epson Corp プリンタ
JPH0834145A (ja) * 1994-07-22 1996-02-06 Matsushita Electric Ind Co Ltd プリンタ
JP3740741B2 (ja) * 1996-06-26 2006-02-01 日産自動車株式会社 直接筒内噴射式火花点火機関

Also Published As

Publication number Publication date
EP0795412A1 (de) 1997-09-17
CN1167683A (zh) 1997-12-17
KR100394394B1 (ko) 2003-10-11
KR970064948A (ko) 1997-10-13
DE69700969T2 (de) 2000-07-27
CN1079331C (zh) 2002-02-20
DE69700969D1 (de) 2000-01-27
US5842795A (en) 1998-12-01

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